METHOD OF INTERFERENCE-STABLE GRADIENT IDENTIFICATION OF OBJECTS CIRCUITS ON DIGITAL HALITONE IMAGES

摘要

FIELD: image processing means.SUBSTANCE: invention relates to digital image processing and can be used to solve tasks for pattern recognition by their contours in digital images. Disclosed is method for noiseless gradient selection of object contours on digital halftone images. Method comprises a step of determining the luminance gradient modulus at each point of the image and forming contours of the object. Further, method comprises calculating a direct wavelet transform of the rows and columns of the digital halftone image, generating two matrices gand gof the luminance gradient components at each point of the image by inverse wavelet transformation, wherein analytical functions, which describe the derivatives of the inverse transform wavelets used in the corresponding coordinates, are used as the transformation core.EFFECT: technical result is higher quality of the generated halftone image contours under interference conditions.1 cl, 6 dwg